A playlist can be sad.Logical formLearned from18 sentences. A manner can be sad.Logical formLearned from18 sentences. A visit can be sad.Logical formLearned from18 sentences. A delusion can be sad.Logical formLearned from18 sentences. Children can be sad.Logical formLearned from18 sentences. A mission can be sad.Logical formLearned from18 sentences. An article can be sad.Logical formLearned from18 sentences. A (song ..) can be sad.Logical formLearned from18 sentences. Laughter can be sad.Logical formLearned from18 sentences. Strangers can be sad.Logical formLearned from18 sentences. Friends can be sad.Logical formLearned from18 sentences. Nights can be sad.Logical formLearned from18 sentences. Someone may feel sad.Logical formLearned from18 sentences. An addiction can be sad.Logical formLearned from18 sentences. A person may say sad.Logical formLearned from18 sentences.